package ai.kastrax.codebase.semantic.memory

// TODO: 暂时注释掉，等待依赖问题解决

// 空实现以避免语法错误
class SemanticMemoryManager

/*
import ai.kastrax.codebase.embedding.EmbeddingService
import ai.kastrax.codebase.semantic.CodeSemanticAnalyzer
import ai.kastrax.codebase.semantic.model.CodeElement
import ai.kastrax.codebase.store.VectorStore
import ai.kastrax.codebase.symbol.SymbolGraphBuilder
import ai.kastrax.codebase.symbol.model.SymbolGraph
import ai.kastrax.codebase.symbol.model.SymbolNode
import io.github.oshai.kotlinlogging.KotlinLogging
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.Job
import kotlinx.coroutines.async
import kotlinx.coroutines.awaitAll
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.flow.MutableSharedFlow
import kotlinx.coroutines.flow.SharedFlow
import kotlinx.coroutines.flow.asSharedFlow
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import java.nio.file.Path
import java.util.concurrent.ConcurrentHashMap
import java.util.concurrent.atomic.AtomicBoolean
import kotlin.io.path.exists
import kotlin.io.path.isDirectory

private val logger = KotlinLogging.logger {}

/**
 * 语义记忆管理器配置
 *
 * @property memoryStoreName 记忆存储名称
 * @property vectorStoreName 向量存储名称
 * @property embeddingModelName 嵌入模型名称
 * @property maxConcurrentTasks 最大并发任务数
 * @property autoIndexNewElements 是否自动索引新元素
 * @property autoUpdateIndices 是否自动更新索引
 * @property enableEventNotifications 是否启用事件通知
 */
data class SemanticMemoryManagerConfig(
    val memoryStoreName: String = "codebase-memory",
    val vectorStoreName: String = "memory-vectors",
    val embeddingModelName: String = "default",
    val maxConcurrentTasks: Int = 10,
    val autoIndexNewElements: Boolean = true,
    val autoUpdateIndices: Boolean = true,
    val enableEventNotifications: Boolean = true
)

/**
 * 记忆管理器事件类型
 */
enum class MemoryManagerEventType {
    INITIALIZED,
    MEMORY_ADDED,
    MEMORY_UPDATED,
    MEMORY_REMOVED,
    INDEXING_STARTED,
    INDEXING_COMPLETED,
    INDEXING_FAILED,
    QUERY_EXECUTED,
    ERROR
}

/**
 * 记忆管理器事件
 *
 * @property type 事件类型
 * @property message 事件消息
 * @property data 事件数据
 */
data class MemoryManagerEvent(
    val type: MemoryManagerEventType,
    val message: String,
    val data: Map<String, Any> = emptyMap()
)

/**
 * 语义记忆管理器
 *
 * 用于管理和协调语义记忆的生成、存储和检索
 *
 * @property semanticAnalyzer 代码语义分析器
 * @property symbolGraphBuilder 符号关系图构建器
 * @property embeddingService 嵌入服务
 * @property vectorStore 向量存储
 * @property config 配置
 */
class SemanticMemoryManager(
    private val semanticAnalyzer: CodeSemanticAnalyzer,
    private val symbolGraphBuilder: SymbolGraphBuilder,
    private val embeddingService: EmbeddingService,
    private val vectorStore: VectorStore,
    private val config: SemanticMemoryManagerConfig = SemanticMemoryManagerConfig()
) {
    // 记忆存储
    private val memoryStore = SemanticMemoryStore(config.memoryStoreName)

    // 记忆生成器
    private val memoryGenerator = SemanticMemoryGenerator(
        config = SemanticMemoryGeneratorConfig(
            maxConcurrentTasks = config.maxConcurrentTasks
        )
    )

    // 记忆检索器
    private val memoryRetriever = SemanticMemoryRetriever(
        memoryStore = memoryStore,
        embeddingService = embeddingService,
        vectorStore = vectorStore,
        config = SemanticMemoryRetrieverConfig(
            embeddingModelName = config.embeddingModelName,
            vectorStoreName = config.vectorStoreName
        )
    )

    // 事件流
    private val _events = MutableSharedFlow<MemoryManagerEvent>(replay = 0)
    val events: SharedFlow<MemoryManagerEvent> = _events.asSharedFlow()

    // 索引任务队列
    private val indexingQueue = Channel<IndexingTask>(Channel.UNLIMITED)

    // 索引任务作业
    private var indexingJob: Job? = null

    // 是否已初始化
    private val initialized = AtomicBoolean(false)

    // 是否正在运行
    private val running = AtomicBoolean(false)

    // 索引任务类型
    private sealed class IndexingTask {
        data class IndexCodeElement(val element: CodeElement) : IndexingTask()
        data class IndexSymbolNode(val node: SymbolNode, val graph: SymbolGraph) : IndexingTask()
        data class IndexCodebase(val path: Path) : IndexingTask()
    }

    /**
     * 初始化管理器
     */
    suspend fun initialize() = withContext(Dispatchers.IO) {
        if (initialized.getAndSet(true)) {
            logger.info { "语义记忆管理器已经初始化" }
            return@withContext
        }

        logger.info { "初始化语义记忆管理器" }

        try {
            // 初始化记忆检索器
            memoryRetriever.initialize()

            // 启动索引任务处理器
            startIndexingProcessor()

            // 发送初始化事件
            emitEvent(
                MemoryManagerEventType.INITIALIZED,
                "语义记忆管理器初始化完成"
            )
        } catch (e: Exception) {
            logger.error(e) { "初始化语义记忆管理器失败: ${e.message}" }

            // 发送错误事件
            emitEvent(
                MemoryManagerEventType.ERROR,
                "初始化语义记忆管理器失败: ${e.message}",
                mapOf("error" to e)
            )

            throw e
        }
    }

    /**
     * 启动管理器
     */
    fun start() {
        if (running.getAndSet(true)) {
            logger.info { "语义记忆管理器已经在运行" }
            return
        }

        logger.info { "启动语义记忆管理器" }

        // 启动索引任务处理器
        startIndexingProcessor()
    }

    /**
     * 停止管理器
     */
    fun stop() {
        if (!running.getAndSet(false)) {
            logger.info { "语义记忆管理器已经停止" }
            return
        }

        logger.info { "停止语义记忆管理器" }

        // 停止索引任务处理器
        indexingJob?.cancel()
        indexingJob = null
    }

    /**
     * 启动索引任务处理器
     */
    private fun startIndexingProcessor() {
        if (indexingJob != null && indexingJob?.isActive == true) {
            return
        }

        indexingJob = CoroutineScope(Dispatchers.IO).launch {
            logger.info { "启动索引任务处理器" }

            try {
                for (task in indexingQueue) {
                    if (!running.get()) {
                        break
                    }

                    try {
                        processIndexingTask(task)
                    } catch (e: Exception) {
                        logger.error(e) { "处理索引任务失败: ${e.message}" }

                        // 发送错误事件
                        emitEvent(
                            MemoryManagerEventType.ERROR,
                            "处理索引任务失败: ${e.message}",
                            mapOf("error" to e, "task" to task)
                        )
                    }
                }
            } catch (e: Exception) {
                logger.error(e) { "索引任务处理器异常: ${e.message}" }

                // 发送错误事件
                emitEvent(
                    MemoryManagerEventType.ERROR,
                    "索引任务处理器异常: ${e.message}",
                    mapOf("error" to e)
                )
            }
        }
    }

    /**
     * 处理索引任务
     *
     * @param task 索引任务
     */
    private suspend fun processIndexingTask(task: IndexingTask) {
        when (task) {
            is IndexingTask.IndexCodeElement -> {
                indexCodeElement(task.element)
            }
            is IndexingTask.IndexSymbolNode -> {
                indexSymbolNode(task.node, task.graph)
            }
            is IndexingTask.IndexCodebase -> {
                indexCodebase(task.path)
            }
        }
    }

    /**
     * 索引代码元素
     *
     * @param element 代码元素
     */
    private suspend fun indexCodeElement(element: CodeElement) {
        logger.debug { "索引代码元素: ${element.name}" }

        try {
            // 生成记忆
            val memories = memoryGenerator.generateMemoriesFromCodeElement(element)

            if (memories.isEmpty()) {
                return
            }

            // 添加记忆到存储
            var addedCount = 0
            memories.forEach { memory ->
                if (memoryStore.addMemory(memory)) {
                    addedCount++

                    // 发送记忆添加事件
                    emitEvent(
                        MemoryManagerEventType.MEMORY_ADDED,
                        "添加记忆: ${memory.getShortDescription()}",
                        mapOf("memory" to memory)
                    )
                }
            }

            // 索引记忆
            val indexedCount = memoryRetriever.indexMemories(memories)

            logger.debug { "索引代码元素完成: ${element.name}, 添加 $addedCount 个记忆, 索引 $indexedCount 个记忆" }
        } catch (e: Exception) {
            logger.error(e) { "索引代码元素失败: ${element.name}, ${e.message}" }

            // 发送错误事件
            emitEvent(
                MemoryManagerEventType.ERROR,
                "索引代码元素失败: ${element.name}, ${e.message}",
                mapOf("error" to e, "element" to element)
            )
        }
    }

    /**
     * 索引符号节点
     *
     * @param node 符号节点
     * @param graph 符号图
     */
    private suspend fun indexSymbolNode(node: SymbolNode, graph: SymbolGraph) {
        logger.debug { "索引符号节点: ${node.name}" }

        try {
            // 生成记忆
            val memories = memoryGenerator.generateMemoriesFromSymbolNode(node, graph)

            if (memories.isEmpty()) {
                return
            }

            // 添加记忆到存储
            var addedCount = 0
            memories.forEach { memory ->
                if (memoryStore.addMemory(memory)) {
                    addedCount++

                    // 发送记忆添加事件
                    emitEvent(
                        MemoryManagerEventType.MEMORY_ADDED,
                        "添加记忆: ${memory.getShortDescription()}",
                        mapOf("memory" to memory)
                    )
                }
            }

            // 索引记忆
            val indexedCount = memoryRetriever.indexMemories(memories)

            logger.debug { "索引符号节点完成: ${node.name}, 添加 $addedCount 个记忆, 索引 $indexedCount 个记忆" }
        } catch (e: Exception) {
            logger.error(e) { "索引符号节点失败: ${node.name}, ${e.message}" }

            // 发送错误事件
            emitEvent(
                MemoryManagerEventType.ERROR,
                "索引符号节点失败: ${node.name}, ${e.message}",
                mapOf("error" to e, "node" to node)
            )
        }
    }

    /**
     * 索引代码库
     *
     * @param path 代码库路径
     */
    private suspend fun indexCodebase(path: Path) {
        logger.info { "开始索引代码库: $path" }

        // 发送索引开始事件
        emitEvent(
            MemoryManagerEventType.INDEXING_STARTED,
            "开始索引代码库: $path",
            mapOf("path" to path)
        )

        try {
            // 检查路径是否存在
            if (!path.exists() || !path.isDirectory()) {
                throw IllegalArgumentException("路径不存在或不是目录: $path")
            }

            // 分析代码库
            val codebase = semanticAnalyzer.analyzeCodebase(path)

            // 构建符号图
            val graph = symbolGraphBuilder.buildGraph(codebase)

            // 索引代码元素
            val elementMemories = memoryGenerator.generateMemoriesFromCodeElement(codebase)

            // 索引符号节点
            val symbolMemories = mutableListOf<SemanticMemory>()

            // 并行处理符号节点
            val nodes = graph.getAllNodes()
            nodes.chunked(config.maxConcurrentTasks).forEach { chunk ->
                val chunkMemories = chunk.map { node ->
                    async(Dispatchers.IO) {
                        memoryGenerator.generateMemoriesFromSymbolNode(node, graph)
                    }
                }.awaitAll().flatten()

                symbolMemories.addAll(chunkMemories)
            }

            // 合并记忆
            val allMemories = elementMemories + symbolMemories

            // 添加记忆到存储
            var addedCount = 0
            allMemories.forEach { memory ->
                if (memoryStore.addMemory(memory)) {
                    addedCount++
                }
            }

            // 索引记忆
            val indexedCount = memoryRetriever.indexMemories(allMemories)

            logger.info { "索引代码库完成: $path, 添加 $addedCount 个记忆, 索引 $indexedCount 个记忆" }

            // 发送索引完成事件
            emitEvent(
                MemoryManagerEventType.INDEXING_COMPLETED,
                "索引代码库完成: $path, 添加 $addedCount 个记忆, 索引 $indexedCount 个记忆",
                mapOf(
                    "path" to path,
                    "addedCount" to addedCount,
                    "indexedCount" to indexedCount
                )
            )
        } catch (e: Exception) {
            logger.error(e) { "索引代码库失败: $path, ${e.message}" }

            // 发送索引失败事件
            emitEvent(
                MemoryManagerEventType.INDEXING_FAILED,
                "索引代码库失败: $path, ${e.message}",
                mapOf("error" to e, "path" to path)
            )

            throw e
        }
    }

    /**
     * 添加代码元素索引任务
     *
     * @param element 代码元素
     */
    suspend fun addCodeElementIndexingTask(element: CodeElement) {
        indexingQueue.send(IndexingTask.IndexCodeElement(element))
    }

    /**
     * 添加符号节点索引任务
     *
     * @param node 符号节点
     * @param graph 符号图
     */
    suspend fun addSymbolNodeIndexingTask(node: SymbolNode, graph: SymbolGraph) {
        indexingQueue.send(IndexingTask.IndexSymbolNode(node, graph))
    }

    /**
     * 添加代码库索引任务
     *
     * @param path 代码库路径
     */
    suspend fun addCodebaseIndexingTask(path: Path) {
        indexingQueue.send(IndexingTask.IndexCodebase(path))
    }

    /**
     * 语义搜索
     *
     * @param query 查询文本
     * @param limit 返回结果的最大数量
     * @param minScore 最小相似度分数
     * @param filter 过滤条件
     * @return 搜索结果列表
     */
    suspend fun semanticSearch(
        query: String,
        limit: Int = 10,
        minScore: Double = 0.7,
        filter: Map<String, String> = emptyMap()
    ): List<SemanticMemorySearchResult> {
        logger.debug { "执行语义搜索: $query" }

        try {
            val results = memoryRetriever.semanticSearch(query, limit, minScore, filter)

            // 发送查询执行事件
            emitEvent(
                MemoryManagerEventType.QUERY_EXECUTED,
                "执行语义搜索: $query, 找到 ${results.size} 个结果",
                mapOf(
                    "query" to query,
                    "limit" to limit,
                    "minScore" to minScore,
                    "filter" to filter,
                    "resultCount" to results.size
                )
            )

            return results
        } catch (e: Exception) {
            logger.error(e) { "语义搜索失败: $query, ${e.message}" }

            // 发送错误事件
            emitEvent(
                MemoryManagerEventType.ERROR,
                "语义搜索失败: $query, ${e.message}",
                mapOf("error" to e, "query" to query)
            )

            return emptyList()
        }
    }

    /**
     * 混合搜索
     *
     * @param query 查询文本
     * @param limit 返回结果的最大数量
     * @param minScore 最小相似度分数
     * @param filter 过滤条件
     * @return 搜索结果列表
     */
    suspend fun hybridSearch(
        query: String,
        limit: Int = 10,
        minScore: Double = 0.7,
        filter: Map<String, String> = emptyMap()
    ): List<SemanticMemorySearchResult> {
        logger.debug { "执行混合搜索: $query" }

        try {
            val results = memoryRetriever.hybridSearch(query, limit, minScore, filter)

            // 发送查询执行事件
            emitEvent(
                MemoryManagerEventType.QUERY_EXECUTED,
                "执行混合搜索: $query, 找到 ${results.size} 个结果",
                mapOf(
                    "query" to query,
                    "limit" to limit,
                    "minScore" to minScore,
                    "filter" to filter,
                    "resultCount" to results.size
                )
            )

            return results
        } catch (e: Exception) {
            logger.error(e) { "混合搜索失败: $query, ${e.message}" }

            // 发送错误事件
            emitEvent(
                MemoryManagerEventType.ERROR,
                "混合搜索失败: $query, ${e.message}",
                mapOf("error" to e, "query" to query)
            )

            return emptyList()
        }
    }

    /**
     * 添加记忆
     *
     * @param memory 语义记忆
     * @return 是否成功添加
     */
    suspend fun addMemory(memory: SemanticMemory): Boolean {
        logger.debug { "添加记忆: ${memory.getShortDescription()}" }

        try {
            // 添加记忆到存储
            if (!memoryStore.addMemory(memory)) {
                return false
            }

            // 索引记忆
            val success = memoryRetriever.indexMemory(memory)

            if (success) {
                // 发送记忆添加事件
                emitEvent(
                    MemoryManagerEventType.MEMORY_ADDED,
                    "添加记忆: ${memory.getShortDescription()}",
                    mapOf("memory" to memory)
                )
            }

            return success
        } catch (e: Exception) {
            logger.error(e) { "添加记忆失败: ${memory.id}, ${e.message}" }

            // 发送错误事件
            emitEvent(
                MemoryManagerEventType.ERROR,
                "添加记忆失败: ${memory.id}, ${e.message}",
                mapOf("error" to e, "memory" to memory)
            )

            return false
        }
    }

    /**
     * 更新记忆
     *
     * @param memory 语义记忆
     * @return 是否成功更新
     */
    suspend fun updateMemory(memory: SemanticMemory): Boolean {
        logger.debug { "更新记忆: ${memory.getShortDescription()}" }

        try {
            // 更新记忆存储
            if (!memoryStore.updateMemory(memory)) {
                return false
            }

            // 更新记忆索引
            val success = memoryRetriever.updateMemoryIndex(memory)

            if (success) {
                // 发送记忆更新事件
                emitEvent(
                    MemoryManagerEventType.MEMORY_UPDATED,
                    "更新记忆: ${memory.getShortDescription()}",
                    mapOf("memory" to memory)
                )
            }

            return success
        } catch (e: Exception) {
            logger.error(e) { "更新记忆失败: ${memory.id}, ${e.message}" }

            // 发送错误事件
            emitEvent(
                MemoryManagerEventType.ERROR,
                "更新记忆失败: ${memory.id}, ${e.message}",
                mapOf("error" to e, "memory" to memory)
            )

            return false
        }
    }

    /**
     * 删除记忆
     *
     * @param memoryId 记忆 ID
     * @return 是否成功删除
     */
    suspend fun deleteMemory(memoryId: String): Boolean {
        logger.debug { "删除记忆: $memoryId" }

        try {
            // 获取记忆
            val memory = memoryStore.getMemory(memoryId) ?: return false

            // 删除记忆索引
            val indexDeleted = memoryRetriever.deleteMemoryIndex(memoryId)

            // 删除记忆存储
            val storeDeleted = memoryStore.removeMemory(memoryId)

            if (storeDeleted) {
                // 发送记忆删除事件
                emitEvent(
                    MemoryManagerEventType.MEMORY_REMOVED,
                    "删除记忆: ${memory.getShortDescription()}",
                    mapOf("memory" to memory)
                )
            }

            return indexDeleted && storeDeleted
        } catch (e: Exception) {
            logger.error(e) { "删除记忆失败: $memoryId, ${e.message}" }

            // 发送错误事件
            emitEvent(
                MemoryManagerEventType.ERROR,
                "删除记忆失败: $memoryId, ${e.message}",
                mapOf("error" to e, "memoryId" to memoryId)
            )

            return false
        }
    }

    /**
     * 获取记忆
     *
     * @param memoryId 记忆 ID
     * @return 语义记忆，如果不存在则返回 null
     */
    fun getMemory(memoryId: String): SemanticMemory? {
        return memoryStore.getMemory(memoryId)
    }

    /**
     * 获取所有记忆
     *
     * @return 记忆列表
     */
    fun getAllMemories(): List<SemanticMemory> {
        return memoryStore.getAllMemories()
    }

    /**
     * 根据类型查找记忆
     *
     * @param type 记忆类型
     * @return 记忆列表
     */
    fun findMemoriesByType(type: MemoryType): List<SemanticMemory> {
        return memoryStore.findMemoriesByType(type)
    }

    /**
     * 根据重要性查找记忆
     *
     * @param importance 重要性级别
     * @return 记忆列表
     */
    fun findMemoriesByImportance(importance: ImportanceLevel): List<SemanticMemory> {
        return memoryStore.findMemoriesByImportance(importance)
    }

    /**
     * 根据代码元素查找记忆
     *
     * @param elementId 代码元素 ID
     * @return 记忆列表
     */
    fun findMemoriesByElement(elementId: String): List<SemanticMemory> {
        return memoryStore.findMemoriesByElement(elementId)
    }

    /**
     * 根据符号查找记忆
     *
     * @param symbolId 符号 ID
     * @return 记忆列表
     */
    fun findMemoriesBySymbol(symbolId: String): List<SemanticMemory> {
        return memoryStore.findMemoriesBySymbol(symbolId)
    }

    /**
     * 根据文件路径查找记忆
     *
     * @param filePath 文件路径
     * @return 记忆列表
     */
    fun findMemoriesByFile(filePath: Path): List<SemanticMemory> {
        return memoryStore.findMemoriesByFile(filePath)
    }

    /**
     * 查找相关记忆
     *
     * @param memoryId 记忆 ID
     * @return 记忆列表
     */
    fun findRelatedMemories(memoryId: String): List<SemanticMemory> {
        return memoryStore.findRelatedMemories(memoryId)
    }

    /**
     * 创建自定义记忆
     *
     * @param content 记忆内容
     * @param sourceElements 源代码元素列表
     * @param sourceSymbols 源符号节点列表
     * @param importance 重要性级别
     * @param metadata 元数据
     * @return 语义记忆
     */
    fun createCustomMemory(
        content: String,
        sourceElements: List<CodeElement> = emptyList(),
        sourceSymbols: List<SymbolNode> = emptyList(),
        importance: ImportanceLevel = ImportanceLevel.MEDIUM,
        metadata: Map<String, Any> = emptyMap()
    ): SemanticMemory {
        return memoryGenerator.generateCustomMemory(
            content = content,
            sourceElements = sourceElements,
            sourceSymbols = sourceSymbols,
            importance = importance,
            metadata = metadata
        )
    }

    /**
     * 获取记忆存储统计信息
     *
     * @return 统计信息
     */
    fun getMemoryStoreStats(): Map<String, Any> {
        return memoryStore.getStats()
    }

    /**
     * 清除缓存
     */
    fun clearCache() {
        memoryRetriever.clearCache()
    }

    /**
     * 发送事件
     *
     * @param type 事件类型
     * @param message 事件消息
     * @param data 事件数据
     */
    private suspend fun emitEvent(
        type: MemoryManagerEventType,
        message: String,
        data: Map<String, Any> = emptyMap()
    ) {
        if (!config.enableEventNotifications) {
            return
        }

        try {
            val event = MemoryManagerEvent(type, message, data)
            _events.emit(event)
        } catch (e: Exception) {
            logger.error(e) { "发送事件失败: $type, $message, ${e.message}" }
        }
    }
}
*/
